Copyright law validity in india

The Copyright Act does not make any explicit mention of invalidation proceedings.
It does however, refer to rectification of the copyright register.
Section 50 of the Copyright Act, read with rule 71 of the Copyright Rules 2013, states clearly that a challenge can be made about the entry of a particular work on the copyright register.

In case of unpublished Cinematograph films, Photographs, and computer programs the copyright subsites up to 60 years from the year in which the original work was created.
Copyright for Sound recordings is valid for 60 years from the end of the year in which that sound recording is published for the first time.

Nationality is not a criterion for granting copyright in India and citizenship of India is not required for copyright to be granted.
By virtue of section 40 of the Copyright Act and the International Copyright Order 1999, India has protected foreign works of around 137 countries, with the same protection as granted to copyright works in India.

The Indian copyright law protects literary works, dramatic works, musical works, artistic works, cinematograph films and sound recordings. lifetime of the author + sixty years from the beginning of the calendar year next following the year in which the author dies.